Capt'n B may have the inside track on this-- as it seems odd that a booker would decline to book you because there were a couple of things things in your repertoire that he didn't like.

It is generally possible to leave that material that is not appropriate to a venue off the set list--We never, for instance, played "D-I-V-O-R-C-E" at a wedding, and, at least to my knowledge, were never barred from a wedding job because we could play it-